diff --git a/src/Dodge/Data/Item/Use.hs b/src/Dodge/Data/Item/Use.hs
index 4c0396802..2dbe3ad52 100644
--- a/src/Dodge/Data/Item/Use.hs
+++ b/src/Dodge/Data/Item/Use.hs
@@ -33,7 +33,7 @@ data ItemUse
     = UseHeld
         { _heldDelay :: UseDelay
         , _heldMuzzles :: [Muzzle]
-        , _heldParams :: HeldParams
+--        , _heldParams :: HeldParams
         , _heldFrame :: Int
         , _heldUseEffect :: HeldUseEffect
         }
@@ -73,12 +73,12 @@ data AttachParams
     | APNothing
     deriving (Eq, Show, Read)
 
-data HeldParams
-    = DefaultHeldParams
-    | GasSprayParams { _weaponInvLock :: Int }
-    | BeamShooterParams
-    | BulletShooterParams { _weaponInvLock :: Int }
-    deriving (Eq, Show, Read) --Generic, Flat)
+--data HeldParams
+--    = DefaultHeldParams
+--    | GasSprayParams { _weaponInvLock :: Int }
+--    | BeamShooterParams
+--    | BulletShooterParams { _weaponInvLock :: Int }
+--    deriving (Eq, Show, Read) --Generic, Flat)
 
 data AmmoParams
     = BulletParams {_ampBullet :: Bullet}
@@ -149,7 +149,7 @@ makeLenses ''ItemUse
 
 --makeLenses ''AimParams
 makeLenses ''Muzzle
-makeLenses ''HeldParams
+--makeLenses ''HeldParams
 makeLenses ''AttachParams
 makeLenses ''AmmoParams
 makeLenses ''MuzzleEffect
@@ -163,7 +163,7 @@ deriveJSON defaultOptions ''UseCondition
 deriveJSON defaultOptions ''MuzzleEffect
 deriveJSON defaultOptions ''FlareType
 deriveJSON defaultOptions ''AmmoParams
-deriveJSON defaultOptions ''HeldParams
+--deriveJSON defaultOptions ''HeldParams
 deriveJSON defaultOptions ''AmmoPerShot
 deriveJSON defaultOptions ''Muzzle
 deriveJSON defaultOptions ''AttachParams
diff --git a/src/Dodge/Default/Item/Use.hs b/src/Dodge/Default/Item/Use.hs
index cc1f56f49..6c0496a6e 100644
--- a/src/Dodge/Default/Item/Use.hs
+++ b/src/Dodge/Default/Item/Use.hs
@@ -27,9 +27,9 @@ defaultHeldUse :: ItemUse
 defaultHeldUse = UseHeld
     { _heldDelay = FixedRate{_rateMax = 8, _rateTimeLastUsed = 0}
     , _heldMuzzles = defaultMuzzles
-    , _heldParams = BulletShooterParams
-        { _weaponInvLock = 0
-        }
+--    , _heldParams = BulletShooterParams
+--        { _weaponInvLock = 0
+--        }
     , _heldFrame = 0
     , _heldUseEffect = NoHeldUseEffect
     }
diff --git a/src/Dodge/HeldUse.hs b/src/Dodge/HeldUse.hs
index c84a85f86..ea2e903f0 100644
--- a/src/Dodge/HeldUse.hs
+++ b/src/Dodge/HeldUse.hs
@@ -231,15 +231,27 @@ itemSidePush = \case
     BLINKERUNSAFE -> 0
 
 applyInvLock :: Item -> Creature -> World -> World
-applyInvLock itm cr = case itm ^? itUse . heldParams . weaponInvLock of
-    Just i
-        | i > 0 ->
+applyInvLock itm cr 
+    | i <- itemInvLock itm
+        , i > 0 =
             (cWorld . lWorld . delayedEvents .:~ (i, UnlockInv cid))
                 . lockInv cid
-    _ -> id
+    | otherwise = id
   where
     cid = _crID cr
 
+itemInvLock :: Item -> Int
+itemInvLock itm = case itm ^. itType of
+    HELD hit -> heldItemInvLock hit
+    _ -> 0
+
+heldItemInvLock :: HeldItemType -> Int
+heldItemInvLock = \case
+    FLAMESPITTER -> 10
+    VOLLEYGUN i -> i + 1
+    BURSTRIFLE -> 7
+    _ -> 0
+
 applySoundCME :: Item -> Creature -> World -> World
 applySoundCME itm cr = fromMaybe id $ do
     (soundid, x) <- bgunSound itm
diff --git a/src/Dodge/Item/Held/BatteryGuns.hs b/src/Dodge/Item/Held/BatteryGuns.hs
index 218f1a118..5639c9159 100644
--- a/src/Dodge/Item/Held/BatteryGuns.hs
+++ b/src/Dodge/Item/Held/BatteryGuns.hs
@@ -19,7 +19,7 @@ sparkGun =
 teslaGun :: Item
 teslaGun =
     defaultHeldItem
-        & itUse . heldParams .~ BeamShooterParams-- (Just (elecCrackleS, 2))
+--        & itUse . heldParams .~ BeamShooterParams-- (Just (elecCrackleS, 2))
         & itParams .~ teslaParams
         & itUse . heldDelay .~ NoDelay
         & itUse . heldMuzzles . ix 0 . mzPos .~ V2 10 0
@@ -41,7 +41,7 @@ teslaParams =
 laser :: Item
 laser =
     defaultHeldItem
-        & itUse . heldParams .~ BeamShooterParams-- Nothing
+--        & itUse . heldParams .~ BeamShooterParams-- Nothing
         & itAmmoSlots .~ singleAmmo ElectricalAmmo
         & itUse . heldDelay .~ NoDelay
         & itUse . heldMuzzles . ix 0 . mzPos .~ V2 6 0
@@ -60,7 +60,7 @@ laser =
 tractorGun :: Item
 tractorGun =
     defaultHeldItem
-        & itUse . heldParams .~ BeamShooterParams
+--        & itUse . heldParams .~ BeamShooterParams
         & itAmmoSlots .~ singleAmmo ElectricalAmmo
         & itUse . heldMuzzles . ix 0 . mzPos .~ V2 30 0
         & itUse . heldMuzzles . ix 0 . mzInaccuracy .~ 0
diff --git a/src/Dodge/Item/Held/Cane.hs b/src/Dodge/Item/Held/Cane.hs
index 5f35dcd5b..bd1754fe0 100644
--- a/src/Dodge/Item/Held/Cane.hs
+++ b/src/Dodge/Item/Held/Cane.hs
@@ -37,7 +37,6 @@ volleyGun i =
             <*> pure (UseExactly 1)
             <*> ZipList [0..i-1] 
             )
-        & itUse . heldParams . weaponInvLock .~ i + 1
 --        & itUse . heldParams . recoil .~ 30
         & itType .~ HELD (VOLLEYGUN i)
         & itAmmoSlots .~ IM.fromList (zip [0..i-1] $ repeat BulletAmmo)
@@ -74,7 +73,6 @@ burstRifle =
         & itType .~ HELD BURSTRIFLE
         & itUse . heldMuzzles . ix 0 . mzInaccuracy .~ 0.05
         & itUse . heldDelay . rateMax .~ 6
-        & itUse . heldParams . weaponInvLock .~ 7
         & itUse . heldMuzzles %~ doreplicate
   where
     doreplicate (x:_) = [x,x & mzFrame .~ 3,x & mzFrame .~ 6]
diff --git a/src/Dodge/Item/Held/SprayGuns.hs b/src/Dodge/Item/Held/SprayGuns.hs
index 2c8fe9799..86ff3e74d 100644
--- a/src/Dodge/Item/Held/SprayGuns.hs
+++ b/src/Dodge/Item/Held/SprayGuns.hs
@@ -25,7 +25,7 @@ flameSpitter =
     flameThrower
         & itType .~ HELD FLAMESPITTER
         & itUse . heldDelay .~ FixedRate{_rateMax = 3, _rateTimeLastUsed = 0}
-        & itUse . heldParams . weaponInvLock .~ 10
+--        & itUse . heldParams . weaponInvLock .~ 10
 --        & itUse . heldParams . weaponRepeat .~ [1..9]
         & itUse . heldMuzzles . ix 0 . mzEffect . nzPressure .~ UniRandFloat 3 4
 
@@ -79,7 +79,7 @@ flameThrower =
             ]
         & itAmmoSlots .~ singleAmmo GasAmmo
         & itType .~ HELD FLAMETHROWER
-        & itUse . heldParams .~ GasSprayParams
-            { _weaponInvLock = 0
---            , _weaponRepeat = mempty
-            }
+--        & itUse . heldParams .~ GasSprayParams
+--            { _weaponInvLock = 0
+----            , _weaponRepeat = mempty
+--            }
diff --git a/src/Dodge/Item/Held/Utility.hs b/src/Dodge/Item/Held/Utility.hs
index bcab394b3..960a32c0f 100644
--- a/src/Dodge/Item/Held/Utility.hs
+++ b/src/Dodge/Item/Held/Utility.hs
@@ -41,7 +41,7 @@ detector dt =
         & itUse . heldDelay . rateMax .~ 20
 --        & itUse . heldAim . aimZoom .~ defaultItZoom{_izFac = 1}
         & itAmmoSlots .~ singleAmmo ElectricalAmmo
-        & itUse . heldParams .~ DefaultHeldParams
+--        & itUse . heldParams .~ DefaultHeldParams
         & itType .~ DETECTOR dt
         & itUse . heldMuzzles . ix 0 . mzEffect .~ MuzzleDetector
         & itUse . heldMuzzles . ix 0 . mzAmmoPerShot .~ UseExactly 100
@@ -53,7 +53,7 @@ blinker =
         & itUse . heldDelay . rateMax .~ 20
 --        & itUse . heldAim . aimZoom .~ defaultItZoom{_izFac = 1}
         & itAmmoSlots .~ singleAmmo ElectricalAmmo
-        & itUse . heldParams .~ DefaultHeldParams
+--        & itUse . heldParams .~ DefaultHeldParams
         & itUse . heldMuzzles . ix 0 . mzEffect .~ MuzzleBlink
         & itUse . heldMuzzles . ix 0 . mzAmmoPerShot .~ UseExactly 10000000
         & itType .~ HELD BLINKER